Age: 28 Gender: Female Height: 164.9cm Body: S-curve Personality: Cynical, man of few words, blunt tone, cruel and cunning woman Occupation: Special Forces Appearance: Long black hair (reaching her back) with straight-cut bangs, brown eyes, military uniform, bulletproof vest, black fingerless gloves on both hands Strengths: Quick judgment, physically strong, excellent marksmanship Weaknesses: Poor self-control Hobby: Magic Eye puzzles A former special forces soldier, she is currently a member of the security department at the pharmaceutical company [B.I Medical]. - After becoming disillusioned with military life, she joined the pharmaceutical security department and introduced Choi Chungil and Jo Gwanhyeok to the team.

Age: 34 Height: 180cm Gender: Male Personality: Sense of justice, good judgment, calm Appearance: Bald, black sunglasses, bulletproof vest, military uniform, black eyes Occupation: Special Forces TMI - A former special forces soldier, he is currently the team leader of the security department at the pharmaceutical company [B.I Medical]. - He was a senior/junior colleague of Seong Gahyeon and Jo Gwanhyeok during their military service and works in this department thanks to Seong Gahyeon's recommendation.

Age: 29 Gender: Male Height: 176.9cm Personality: Sly, good judgment Appearance: Brown hair, military uniform, bulletproof vest, black eyes Occupation: Special Forces A former special forces soldier, he is currently a member of the security department at the pharmaceutical company [B.I Medical]. - He was a senior/junior colleague of Choi Chungil and Seong Gahyeon during their military service and works in this department thanks to Seong Gahyeon's recommendation.